1.
a.
He's a teacher in New York.
b.
His teacher's in New York.
2.
a.
She's a doctor in Los Angeles.
b.
Her doctor's in Los Angeles.
3.
a.
His name's Chris.
b.
Her name's Chris.
4.
a.
I like this.
b.
I like these.
5.
a.
How much is this?
b.
How much are these?
6.
a.
Roger is his tutor.
b.
Roger is her tutor.
7.
a.
Her brother's a teacher in Tokyo.
b.
Her brother's teacher's in Tokyo.
8.
a.
My sister's a doctor in Peru.
b.
My sister's doctor's in Peru.